*{
    padding: 0;
    margin: 0;
}
.clear:after{
    display: block;
    content: "";
    clear: both;
}
.type_area{
    width: 1180px;
    margin: 0 auto;
}
.left{
    float: left;
}
.right{
    float: right;
}
hr{
    background-color: yellow;
    height: 2px;
    border-radius: 20px;
}
li{
    list-style: none;
}
html,body{
    width: 100%;
}
.navigation_bar{
    position: absolute;
    left: 900px;
    top: 50px;
}
.navigation_bar li{
    padding: 0 20px 0 0;
    font-size: 20px;
}
.navigation_bar li:hover{
    color: orange;
}
.list dt{
    font-size: 20px;
    color: aquamarine;
}
.base{
    width: 100%;
    background-color: aqua;
}
.home{
    height: 150px;
    background-color: aqua;
}
.home ul{
    width: 50px;
    height: 100px;
    padding: 0 75px 0 0;
}
.home li{
    padding:10px 50px 0 0;
}